Finding the Fourth Proportional to 31,322.16, 46,980.72 and 19,478.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,322.16 : 46,980.72 = 19,478.88 : x
2. Step 2: Convert to fraction form
   31,322.16/46,980.72 = 19,478.88/x
3. Step 3: Cross multiply
   31,322.16x = 46,980.72 × 19,478.88
4. Step 4: Simplify right side
   31,322.16x = 915,131,807.19
5. Step 5: Solve for x
   x = 915,131,807.19/31,322.16
6. Step 6: Final answer
   x = 29,216.75